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Instant Systems Python Developer Interview Questions and Answers

Updated 16 Jul 2022

Instant Systems Python Developer Interview Experiences

1 interview found

I applied via Monster

Round 1 - Group Discussion 

In a group of 8 people. They gave us topic on Online & Offline Education. I just say be speak boldly

Round 2 - Coding Test 

Tricky but easy. Coding remains the same as we have done many times.

Round 3 - One-on-one 

(2 Questions)

  • Q1. List, Tuples, Dictionary, Set, Binary search, LinkedList..
  • Q2. I prefer you to do Edureka’s top 100 python interview Q&A then it will be easy to crack interview

Interview Preparation Tips

Interview preparation tips for other job seekers - There is no need to worry too much. Everyone gets a job on time.

Interview questions from similar companies

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Recruitment Consulltant and was interviewed in Mar 2024. There were 2 interview rounds.

Round 1 - Coding Test 

DSA medium level questions were asked.

Round 2 - One-on-one 

(2 Questions)

  • Q1. Design MakeMyTrip kind of application.
  • Ans. 

    MakeMyTrip is a travel booking application that allows users to book flights, hotels, and holiday packages.

    • Include features like flight/hotel search, booking, payment gateway integration, and user profiles.

    • Implement filters for search results, reviews/ratings for hotels, and notifications for booking updates.

    • Integrate maps for location tracking, weather forecasts, and customer support chatbot.

    • Offer discounts, loyalty p...

  • Answered by AI
  • Q2. Oops based questions.

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare well for LLD.

Skills evaluated in this interview

I was interviewed in Feb 2022.

Round 1 - Coding Test 

(1 Question)

Round duration - 90 minutes
Round difficulty - Easy

Consisted of 3 DSA questions and MCQ on python proficiency

  • Q1. 

    Palindromic Substrings Problem Statement

    Given a string S, your task is to return all distinct palindromic substrings of the given string in alphabetical order.

    Explanation:

    A string is considered a pal...

  • Ans. 

    Return all distinct palindromic substrings of a given string in alphabetical order.

    • Iterate through all possible substrings of the given string.

    • Check if each substring is a palindrome by comparing it with its reverse.

    • Store all palindromic substrings in a set to ensure uniqueness.

    • Return the sorted list of palindromic substrings.

  • Answered by AI
Round 2 - Video Call 

(1 Question)

Round duration - 60 minutes
Round difficulty - Medium

It was a pure DSA round and interviewer was very helpful with providing significant hints to solve the given problems

  • Q1. 

    Island Perimeter Calculation Problem

    Given a binary grid representation of a map of an island, calculate the perimeter of the island. The grid uses '0' for water and '1' for land.

    The grid has only one i...

  • Ans. 

    Calculate the perimeter of an island represented by a binary grid.

    • Iterate through the grid and count the perimeter based on land cells and their adjacent cells.

    • Each land cell contributes 4 units to the perimeter, subtract 2 units for each adjacent land cell.

    • Handle edge cases where land cells are at the boundaries of the grid.

    • Return the total perimeter for each test case.

  • Answered by AI
Round 3 - Video Call 

(1 Question)

Round duration - 60 minutes
Round difficulty - Hard

DSA+OS

  • Q1. 

    Clearing the Forest Problem Statement

    Ninja lives in a city called Byteland where a festive event is being organized. To make space for this event, Ninja is tasked with clearing a nearby forest. The fores...

  • Ans. 

    Calculate the minimum number of steps Ninja needs to cut down all trees in a forest grid.

    • Iterate through the grid to find the shortest path to cut down all trees in order.

    • Use a priority queue to keep track of the shortest trees to cut next.

    • If it's impossible to cut all trees, return -1.

    • Consider all four cardinal directions for movement in the grid.

  • Answered by AI

Interview Preparation Tips

Professional and academic backgroundI applied for the job as SDE - 1 in GurgaonEligibility criteriaPython ProficiencyTower Research Capital interview preparation:Topics to prepare for the interview - Data Structures, Algorithms , OOPS , DBMS , OSTime required to prepare for the interview - 2 monthsInterview preparation tips for other job seekers

Tip 1 : Practice at least 250 questions
Tip 2 : Do at least two projects
 

Application resume tips for other job seekers

Tip 1 : Should be covered in One page
Tip 2 : Project description should be professional

Final outcome of the interviewSelected

Skills evaluated in this interview

I was interviewed in Jun 2022.

Round 1 - Coding Test 

(2 Questions)

Round duration - 70 Minutes
Round difficulty - Hard

The test link was active for a week, and you can give anytime you like. The IDE was very good and self explanatory. There were 2 coding questions and 15 aptitude questions.

  • Q1. 

    Unweighted Graph Shortest Path Problem

    You are tasked with finding the shortest path between two houses in the city of Ninjaland, represented as an unweighted graph. The city has N houses numbered from 1 ...

  • Ans. 

    Find the shortest path between two houses in a city represented as an unweighted graph.

    • Use breadth-first search (BFS) algorithm to find the shortest path in an unweighted graph.

    • Start BFS from the source house and keep track of the path taken to reach each house.

    • Once the destination house is reached, backtrack from destination to source to find the shortest path.

    • Consider using a queue data structure to implement BFS eff...

  • Answered by AI
  • Q2. 

    Check If Two Nodes Are Cousins

    You are given an arbitrary binary tree consisting of N nodes, where each node is associated with a certain value, and two node values, a and b. Your task is to determine if ...

  • Ans. 

    Check if two nodes in a binary tree are cousins by comparing their levels and parents.

    • Traverse the tree to find the levels and parents of the given nodes.

    • Compare the levels and parents of the two nodes to determine if they are cousins.

    • If the levels are the same and the parents are different, the nodes are cousins.

  • Answered by AI
Round 2 - Video Call 

(2 Questions)

Round duration - 60 Minutes
Round difficulty - Medium

It contained two programming questions.

  • Q1. 

    Counting Nodes in a Complete Binary Tree - Problem Statement

    Given the root of a complete binary tree, calculate the total number of nodes in this tree.

    A complete binary tree is defined as a binary tree...

  • Ans. 

    Count the total number of nodes in a complete binary tree given its root.

    • Traverse the tree in level order and count the nodes

    • Use a queue to keep track of nodes at each level

    • Check for null nodes represented by -1 in the input

    • The total number of nodes in the example tree is 7

  • Answered by AI
  • Q2. 

    Rearrange Array Numbers for Largest Possible Number

    Given an array ARR consisting of non-negative integers, rearrange the numbers to form the largest possible numerical value. You are not permitted to alt...

  • Ans. 

    Rearrange array numbers to form the largest possible numerical value by combining digits of each number in the array.

    • Convert integers in the array to strings for easier manipulation.

    • Sort the array of strings in non-increasing order based on custom comparison function.

    • Join the sorted strings to form the largest possible number.

  • Answered by AI
Round 3 - Video Call 

(1 Question)

Round duration - 60 Minutes
Round difficulty - Medium

This was more of a interaction round with some technical skills.

  • Q1. Can you explain the ACID properties and the rollback mechanism in DBMS?
  • Ans. 

    ACID properties ensure database transactions are processed reliably. Rollback mechanism undoes changes if transaction fails.

    • ACID properties: Atomicity, Consistency, Isolation, Durability

    • Atomicity ensures all operations in a transaction are completed successfully or none at all

    • Consistency ensures database remains in a valid state before and after transaction

    • Isolation ensures transactions are independent and do not inter...

  • Answered by AI

Interview Preparation Tips

Eligibility criteria8 CGPATower Research Capital interview preparation:Topics to prepare for the interview - DSA and Algorithms, OOPS, Database, OS, NetworksTime required to prepare for the interview - 6 monthsInterview preparation tips for other job seekers

Tip 1 : Focus on different varieties of problems, quality of problems matter greater than the quantity.
Tip 2 : Focus on design thinking, that will help in rounds other than problem solving.

Application resume tips for other job seekers

Tip 1 : Focus on demonstrating your academic excellence and course projects
Tip 2 : Mention internship details with clarity

Final outcome of the interviewSelected

Skills evaluated in this interview

I was interviewed in Dec 2020.

Round 1 - Coding Test 

(2 Questions)

Round duration - 60 minutes
Round difficulty - Easy

This was the qualification round which comprised of several MCQs and 3 coding questions.
It was held on Hackerearth from 3:00 PM to 4:00 PM.
Use of any other IDE was prohibited.

  • Q1. Given a problem statement and a piece of code, how would you find and correct the bug in the code?
  • Ans. 

    To find and correct a bug in code, analyze problem statement, review code, use debugging tools, and test different scenarios.

    • Understand the problem statement and expected output.

    • Review the code for syntax errors, logical errors, and potential bugs.

    • Use debugging tools like breakpoints, print statements, and IDE debuggers.

    • Test the code with different inputs to identify the bug.

    • Make necessary corrections based on the iden...

  • Answered by AI
  • Q2. 

    Print Nodes at Distance K from a Given Node

    Given an arbitrary binary tree, a node of the tree, and an integer 'K', find all nodes that are at a distance K from the specified node, and return a list of th...

  • Ans. 

    Given a binary tree, a target node, and an integer K, find all nodes at distance K from the target node.

    • Traverse the binary tree to find the target node.

    • Use BFS to traverse the tree from the target node to nodes at distance K.

    • Keep track of the distance while traversing the tree.

    • Return the values of nodes at distance K in any order.

  • Answered by AI
Round 2 - Video Call 

(1 Question)

Round duration - 90 minutes
Round difficulty - Medium

I was shared a link of Google Meet and the Google Docs was shared where there was 1 coding problem to be coded there and then the code was run on an IDE to check the sample tests.
Then the interview was followed by a lot of Operating System and Computer System Architecture Questions.
There were 2 Interviewers and both were helpful.
The timing was from 2:30 PM to 4:00 PM

  • Q1. 

    Subarray Challenge: Largest Equal 0s and 1s

    Determine the length of the largest subarray within a given array of 0s and 1s, such that the subarray contains an equal number of 0s and 1s.

    Input:

    Input beg...

  • Ans. 

    Find the length of the largest subarray with equal number of 0s and 1s in a given array.

    • Iterate through the array and maintain a count of 0s and 1s encountered so far.

    • Store the count difference in a hashmap with the index as the key.

    • If the same count difference is encountered again, the subarray between the two indices has equal 0s and 1s.

    • Return the length of the longest subarray found.

  • Answered by AI
Round 3 - HR 

Round duration - 45 minutes
Round difficulty - Easy

The round was held on Google Meet with HR from 2:30 PM to 3:15 PM.
The HR was friendly and asked the basic questions.

Interview Preparation Tips

Eligibility criteriaNeeded Work Experience in a leading Tech CompanyTower Research Capital interview preparation:Topics to prepare for the interview - Dynamic Programming, Data Structures - Sets, HashMap, Priority Queue, SQL, OOPS, Operating System, AlgorithmsTime required to prepare for the interview - 4 monthsInterview preparation tips for other job seekers

Tip 1 : Practice daily 4-5 medium level problems on sites like Leetcode, CodeZen, Hackerearth
Tip 2 : Even though Data Structures and Algorithms is the base but study Course Subjects like DBMS,OS,OOPS too.
Tip 3 : Try to Participate in Contests on LeetCode,Codeforces.

Application resume tips for other job seekers

Tip 1 : Mention the projects you worked on in your past work experience and how it helped your company.
Tip 2 : Keep your resume up to date in accordance with the role you are applying for
Tip 3 : Don't put false things on your resume.

Final outcome of the interviewSelected

Skills evaluated in this interview

I applied via Naukri.com and was interviewed in Jul 2020. There were 4 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. SOLID principals, oops, c# basics, SQL server, azure, design pattern

Interview Preparation Tips

Interview preparation tips for other job seekers - Clear basics of oops and design pattern

I applied via Campus Placement and was interviewed before Jan 2020. There were 4 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. First question in hr interview is tell about yourself then the hr asked questions what I mentioned in my resume. So put the information in resume what you known well. My unique talent is I'm a stage spea...

Interview Preparation Tips

Interview preparation tips for other job seekers - Be bold, be confident, don't put irrelevant information in your resume update yourself relating to your studies

Interview Questionnaire 

1 Question

  • Q1. HTML, CSS, BOOTSTRAP, PHP. SQL

I applied via Campus Placement and was interviewed before Feb 2020. There was 1 interview round.

Interview Questionnaire 

4 Questions

  • Q1. 1.Tell me about yourself.
  • Q2. 2. Some basic questions from DBMS, iot and cloud.
  • Q3. 3. Explain your project ( technology u have used and what is it).
  • Q4. 4. Are you willing to relocate.

Interview Preparation Tips

Interview preparation tips for other job seekers - HR was nice and friendly. Overall it was a NYC experience.
All the best guys.

I applied via Campus Placement and was interviewed before Aug 2020. There were 4 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Tell me aboit yourself
  • Q2. Why mechatronics? Why infosys?

Interview Preparation Tips

Interview preparation tips for other job seekers - Knowbyour projects inside out. Prepare your basic hr questions from the beginning.

Instant Systems Interview FAQs

How many rounds are there in Instant Systems Python Developer interview?
Instant Systems interview process usually has 3 rounds. The most common rounds in the Instant Systems interview process are Group Discussion, Coding Test and One-on-one Round.

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